chore: modernize GitHub Actions workflows

.github/workflows/docker.yml

@@ -4,6 +4,9 @@ on:
   push:
     branches: master
 
+permissions:
+  contents: read
+
 jobs:
   docker:
     runs-on: ubuntu-latest
@@ -27,22 +30,22 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Login to DockerHub
-        uses: docker/login-action@v1
+        uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
+        uses: docker/setup-qemu-action@v3
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
+        uses: docker/setup-buildx-action@v3
 
       - name: Build and push
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v6
         with:
           context: ${{ matrix.context  }}
           push: true

.github/workflows/main.yml

@@ -5,6 +5,9 @@ on:
     branches: [ master ]
   pull_request:
 
+permissions:
+  contents: read
+
 jobs:
   lint:
     name: Lint
@@ -14,8 +17,8 @@ jobs:
         shell: bash
         working-directory: rendertron
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: 15
       - run: npm ci
@@ -30,8 +33,8 @@ jobs:
         shell: bash
         working-directory: rendertron/middleware
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: 15
       - run: npm ci